Waffle is way warmer!
I have two sets (one light w/waffle-weave, one mid-wt regular weave) from Sierra Trading Post. Bought them yrs ago so I don't know if they sell them anymore, but they still run a similar ad for them - Comfortrel, I believe, but no brand on the tags.
The waffle weave is sometimes too warm. Hard to believe given the light weight.
They're polyester, though but I wanted to throw it out there.